1 Rev. Bras. Saúde Mater. Infant., Recife, 23: e20220228 This article is published in Open Access under the Creative Commons Attribution license, which allows use, distribution, and reproduction in any medium, without restrictions, as long as the original work is correctly cited. ORIGINAL ARTICLES Determinants of successful labor induction in a teaching hospital in Nigeria: a 10-year review 1 Department of Obstetrics and Gynecology. Ekiti State University. Ado-Ekiti. 36001. Nigeria. Email: temitope.okunola@eksu.edu.ng 2 Department of Obstetrics and Gynecology. LAUTECH Teaching Hospital. Osogbo, Osun, Nigeria. 3 Bradford Teaching Hospitals NHS Foundation Trust. Bradford, England, United Kingdom. 4 Department of Obstetrics, Gynecology and Perinatology. Obafemi Awolowo University. Ile-Ife. Osun, Nigeria. Objectives: to evaluate the success rate of labor induction and determinants of successful outcome. Methods: retrospective cohort study of parturients that undergone labor induction between 2006 and 2015. Data was retrieved from the medical records and multivariate logistic regression was used to evaluate the determinants of successful labor induction. Results: the rate of labor induction was 10.9%. Out of the 940 women analysed, six hundred and ffty-six women (69.8%) had successful vaginal delivery. Labor induction at 39-40 weeks (OR=2.70; CI95%=1.17-6.36), 41 weeks (OR=2.44; CI95%=1.14-5.28), estimated fetal weight between 2.5 and 3.4kg (OR=4.27, CI95%=1.96-5.59) and estimated fetal weight of 3.5-3.9kg (OR=5.45; CI95%=2.81- 10.60) increased the odds of achieving vaginal delivery. Conclusions: our fndings suggest that 39, 40 and 41 weeks are optimal gestational ages for labor induction with respect to successful vaginal delivery. Also, estimated fetal weight between 2.5kg and 3.9kg favours successful vaginal delivery. Key words Cesarean section, Gestational age, Labor induction, Vaginal delivery http://dx.doi.org/10.1590/1806-9304202300000228-en Abstract Temitope Omoladun Okunola 1 https://orcid.org/0000-0001-6774-853X Sekinat Bolanle Bola-Oyebamiji 2 https://orcid.org/0000-0001-9313-9500 Oluwaseun Sowemimo 3 https://orcid.org/0000-0002-9086-910X Kayode Olusegun Ajenifuja 4 https://orcid.org/0000-0001-9823-5892